The cIRT package (CRAN, GitHub) is home to the implementation of Choice Item Response Theory (cIRT) described by Culpepper and Balamuta (2015). cIRT jointly models the accuracy of cognitive responses and item choices within a bayesian hierarchical framework. Wow, when time flies, it really flies! Today, we’re updating cIRT for the first time in almost 2 years. Moreover, it’s been about six years since the package was first listed on …